Lamp



FIG. 1 is a top perspective view of a lamp showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a bottom perspective view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a lamp, as shown and described. 